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7Windows_paint GDI绘图

时间：2016-06-10 08:34:21      阅读：332      评论：0      收藏：0      [点我收藏+]

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  1. // 7Windows_paint.cpp : 定义应用程序的入口点。
  2. //
  4. #include "stdafx.h"
  5. #include "7Windows_paint.h"
  6. #include "resource.h"
  8. #include <iostream>
  10. HINSTANCE g_hInst = NULL;
  11. HANDLE g_hStdout = NULL; //控制台
  12. int g_DrawType = 0;
  13. COLORREF g_nPenColor = RGB(0,0,0); //画笔颜色
  14. int g_nPenStyle = PS_SOLID; //画笔样式
  15. int g_nPenWdith = 1; //画笔宽度
  16. COLORREF g_nBrushColor = RGB(0, 0, 0); //画刷
  17. int g_nBrushStyle = 0xFFFFFFFF; //画刷样式
  19. CHAR szText[256] = { 0 }; //备用字符串
  20. #define PrintLog(x) WriteConsole(g_hStdout, x, strlen(x), NULL, NULL)
  22. void DrawPixel(HDC hDC)
  23. {
  24. 	COLORREF nColor = RGB(255,0,0);
  25. 	SetPixel(hDC, 100, 100, nColor);
  26. }
  27. void GetPixelColor(HDC hDC)
  28. {
  29. 	COLORREF nColor = GetPixel(hDC, 100, 100);
  31. 	int nRed = GetRValue(nColor);
  32. 	int nGreen = GetGValue(nColor);
  33. 	int nBlue = GetBValue(nColor);
  35. 	sprintf_s(szText, 256, "nRed=%d,nGreen=%d,nBlue=%d", nRed, nGreen, nBlue);
  36. 	//PrintLog(szText);
  37. 	MessageBox(NULL, szText, "color", MB_OK);
  38. 	
  39. }
  41. //DrawLine
  42. void DrawLine(HDC hDC)
  43. {
  44. 	MoveToEx(hDC, 0, 0, NULL); //当前点
  45. 	LineTo(hDC, 500, 500);
  47. 	MoveToEx(hDC, 500, 0, NULL);
  48. 	LineTo(hDC, 0, 500);
  50. }
  52. //DrawArc弧
  53. void DrawArc(HDC hDC)
  54. {
  55. 	SetArcDirection(hDC, AD_CLOCKWISE);//AD_COUNTERCLOCKWISE //顺时针
  56. 	Arc(hDC, 400, 200, 500, 300, 500, 200, 400, 200); //顺时针和逆时针画出来的东西不同
  58. 	SetArcDirection(hDC, AD_COUNTERCLOCKWISE);//AD_CLOCKWISE //逆时针
  59. 	Arc(hDC, 500, 200, 600, 300, 600, 200, 500, 400); //顺时针和逆时针画出来的东西不同
  62. 	MoveToEx(hDC, 200, 200, NULL);
  63. 	AngleArc(hDC, 200, 200, 100, 90, 270);
  64. 	LineTo(hDC, 200, 200);
  65. }
  67. //DrawPolyLine
  68. //折线
  69. void DrawPolyLine(HDC hDC)
  70. {
  71. 	POINT ptPolyLine[7] = { 0 }; //三角形需要4个点
  72. 	ptPolyLine[0].x = 100;
  73. 	ptPolyLine[0].y = 100;
  74. 	ptPolyLine[1].x = 200;
  75. 	ptPolyLine[1].y = 100;
  76. 	ptPolyLine[2].x = 200;
  77. 	ptPolyLine[2].y = 200;
  78. 	ptPolyLine[3].x = 300;
  79. 	ptPolyLine[3].y = 200;
  80. 	ptPolyLine[4].x = 300;
  81. 	ptPolyLine[4].y = 300;
  82. 	ptPolyLine[5].x = 400;
  83. 	ptPolyLine[5].y = 300;
  84. 	ptPolyLine[6].x = 400;
  85. 	ptPolyLine[6].y = 400;
  87. 	//两点绘制一直线
  88. 	Polyline(hDC, ptPolyLine, 7); //绘制折线
  89. 	//PolylineTo(hDC, ptPolyLine, 4);
  91. 	/*
  92. 		分成两组，这两组之间没有任何关联
  93. 	*/
  94. 	DWORD nGroup[2] = { 3, 4 };
  95. 	//PolyPolyline(hDC, ptPolyLine, nGroup, 2);
  96. }
  98. //DrawBizer曲线
  99. void DrawBizer(HDC hDC)
  100. {
  101. 	POINT ptBizer[7] = { 0 };
  102. 	ptBizer[0].x = 100; //端点
  103. 	ptBizer[0].y = 100;
  104. 	ptBizer[1].x = 150; //控制点
  105. 	ptBizer[1].y = 50;
  106. 	ptBizer[2].x = 300; //控制点
  107. 	ptBizer[2].y = 150;
  108. 	ptBizer[3].x = 300; //端点
  109. 	ptBizer[3].y = 100;
  110. 	ptBizer[4].x = 300; //控制点
  111. 	ptBizer[4].y = 400;
  112. 	ptBizer[5].x = 400; //控制点
  113. 	ptBizer[5].y = 200;
  114. 	ptBizer[6].x = 500; //端点
  115. 	ptBizer[6].y = 300;
  117. 	PolyBezier(hDC, ptBizer, 7);
  119. 	//为了看的更清楚，把切线也给划出来
  120. 	MoveToEx(hDC, ptBizer[0].x, ptBizer[0].y,NULL);
  121. 	LineTo(hDC, ptBizer[1].x, ptBizer[1].y);
  122. 	MoveToEx(hDC, ptBizer[2].x, ptBizer[2].y, NULL);
  123. 	LineTo(hDC, ptBizer[3].x, ptBizer[3].y);
  124. }
  126. //DrawPolyDraw多样式线
  127. void DrawPolyDraw(HDC hDC)
  128. {
  129. 	POINT ptDraw[4] = { 0 };
  130. 	ptDraw[0].x = 100;
  131. 	ptDraw[0].y = 100;
  132. 	ptDraw[1].x = 200;
  133. 	ptDraw[1].y = 100;
  134. 	ptDraw[2].x = 200;
  135. 	ptDraw[2].y = 200;
  136. 	ptDraw[3].x = 300;
  137. 	ptDraw[3].y = 200;
  139. 	BYTE ptType[4] = { 0 }; //PolyDraw第三个参数
  140. 	ptType[0] = PT_MOVETO;
  141. 	ptType[1] = PT_LINETO;
  142. 	ptType[2] = PT_MOVETO;
  143. 	ptType[3] = PT_LINETO;
  145. 	PolyDraw(hDC, ptDraw, ptType, 4);
  146. }
  148. //Rect 矩形
  149. void DrawRect(HDC hDC)
  150. {
  151. 	//矩形
  152. 	Rectangle(hDC, 100, 100, 200, 200);
  153. 	//带圆角矩形
  154. 	RoundRect(hDC, 300, 100, 400, 200, 10, 10);
  155. }
  157. //DrawEllipse圆和椭圆
  158. void DrawEllipse(HDC hDC)
  159. {
  160. 	//圆
  161. 	Ellipse(hDC, 100, 100, 200, 200);
  162. 	//椭圆
  163. 	Ellipse(hDC, 300, 100, 500, 200);
  164. }
  166. //DrawPie饼图
  167. void DrawPie(HDC hDC)
  168. {
  169. 	Pie(hDC, 100, 100, 500, 400, 500, 100, 100, 100);
  170. }


  172. //Chord弦
  173. void DrawChord(HDC hDC)
  174. {
  175. 	Chord(hDC, 100, 100, 500, 400, 500, 100, 100, 100);
  176. }
  178. //DrawPolygon多边形
  179. void DrawPolygon(HDC hDC)
  180. {
  181. 	POINT ptPolygon[7] = { 0 };
  182. 	ptPolygon[0].x = 100;
  183. 	ptPolygon[0].y = 100;
  184. 	ptPolygon[1].x = 200;
  185. 	ptPolygon[1].y = 100;
  186. 	ptPolygon[2].x = 200;
  187. 	ptPolygon[2].y = 200;
  188. 	ptPolygon[3].x = 300;
  189. 	ptPolygon[3].y = 200;
  190. 	ptPolygon[4].x = 300;
  191. 	ptPolygon[4].y = 300;
  192. 	ptPolygon[5].x = 400;
  193. 	ptPolygon[5].y = 300;
  194. 	ptPolygon[6].x = 400;
  195. 	ptPolygon[6].y = 400;
  197. 	Polygon(hDC, ptPolygon, 7);
  199. }
  200. void OnPaint(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
  201. {
  202. 	PAINTSTRUCT ps = { 0 };
  203. 	HDC hDC = BeginPaint(hWnd,&ps);
  206. 	//画笔使用
  207. 	//创建画笔
  208. 	HPEN hPen = CreatePen(g_nPenStyle, g_nPenWdith, g_nPenColor);
  209. 	//设置画笔到当前DC
  210. 	HPEN hOldPen = (HPEN)SelectObject(hDC, hPen);
  211. 	
  212. 	//画刷使用*/
  213. 	//创建画刷
  214. 	/*以下一句为默认画刷*/
  215. 	//HBRUSH hBrush = CreateSolidBrush(g_nBrushColor);
  217. 	//创建画刷样式时改写
  218. 	HBRUSH hBrush = NULL;
  219. 	if (g_nBrushStyle == 0xFFFFFFFF)
  220. 	{
  221. 		hBrush = CreateSolidBrush(g_nBrushColor);
  222. 	}
  223. 	else
  224. 	{
  225. 		hBrush = CreateHatchBrush(g_nBrushStyle, g_nBrushColor);
  226. 	}
  227. 	//设置画刷到当前DC
  228. 	HBRUSH hOldBrush = (HBRUSH)SelectObject(hDC, hBrush);
  230. 	//绘制图形
  231. 	//在绘制图形里面根据类型绘制图形
  232. 	switch (g_DrawType)
  233. 	{
  234. 	case ID_SETPIXEL:
  235. 		DrawPixel(hDC);
  236. 		break;
  237. 	case ID_GETPIXEL:
  238. 		GetPixelColor(hDC);
  239. 		break;
  240. 	case ID_LINE:
  241. 		DrawLine(hDC);
  242. 		break;
  243. 	case ID_ARC:
  244. 		DrawArc(hDC);
  245. 		break;
  246. 	case ID_POLYLINE:
  247. 		DrawPolyLine(hDC);
  248. 		break;
  249. 	case ID_DRAWBIZER:
  250. 		DrawBizer(hDC);
  251. 		break;
  252. 	case ID_POLYDRAW:
  253. 		DrawPolyDraw(hDC);
  254. 		break;
  256. 		//矩形
  257. 	case ID_RECT:
  258. 		DrawRect(hDC);
  259. 		break;
  260. 	case ID_ELLIPSE:
  261. 		DrawEllipse(hDC);
  262. 		break;
  263. 	case ID_PIE:
  264. 		DrawPie(hDC);
  265. 		break;
  266. 	case ID_CHORD:
  267. 		DrawChord(hDC);
  268. 		break;
  269. 	case ID_POLYGON:
  270. 		DrawPolygon(hDC);
  271. 		break;
  272. 	}
  275. 	//画笔使用2
  276. 	//取出画笔
  277. 	SelectObject(hDC, hOldPen);
  278. 	//销毁画笔
  279. 	DeleteObject(hPen);
  281. 	//画刷使用2
  282. 	//取出画刷
  283. 	SelectObject(hDC, hOldBrush);
  284. 	//销毁画刷
  285. 	DeleteObject(hBrush);
  289. 	EndPaint(hWnd,&ps);
  290. }
  291. //OnCommand
  292. void OnCommand(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
  293. {
  294. 	int nCmdID = LOWORD(wParam);
  295. 	switch (nCmdID)
  296. 	{
  297. 	case ID_SETPIXEL: //Get 和 Set都是同样的代码，所以这样简写
  298. 	case ID_GETPIXEL:
  299. 	case ID_LINE: //线
  300. 	case ID_ARC: //弧
  301. 	case ID_POLYLINE: //折线
  302. 	case ID_DRAWBIZER: //BIZER曲线
  303. 	case ID_POLYDRAW: //多样式线
  305. 		//矩形
  306. 	case ID_RECT:
  307. 	case ID_ELLIPSE:
  308. 	case ID_PIE:
  309. 	case ID_CHORD:
  310. 	case ID_POLYGON:
  311. 		g_DrawType = nCmdID; //保存绘制图形类型
  313. 		//刷新窗口
  314. 		InvalidateRect(hWnd, NULL, TRUE);
  315. 		break;
  317. 	case ID_REDPEN: //红色画笔
  318. 		//把这个笔保存到全局变量中
  319. 		g_nPenColor = RGB(255, 0, 0); //画笔颜色
  321. 		//刷新窗口
  322. 		InvalidateRect(hWnd, NULL, TRUE);
  323. 		break;
  325. 	case PS_PSDASH: //画笔的样式为虚线
  326. 		g_nPenStyle = PS_DASH;
  327. 		InvalidateRect(hWnd, NULL, TRUE);
  328. 		break;
  331. 	case ID_PEN1: //画笔宽度为1
  332. 		g_nPenWdith = 1;
  333. 		InvalidateRect(hWnd, NULL, TRUE);
  334. 		break;
  335. 	case ID_PEN5: //画笔宽度为5
  336. 		g_nPenWdith = 5;
  337. 		InvalidateRect(hWnd, NULL, TRUE);
  338. 		break;
  340. 		//画刷颜色
  341. 	case ID_REDBRUSH:
  342. 		g_nBrushColor = RGB(255, 0, 0);
  343. 		InvalidateRect(hWnd, NULL, TRUE);
  344. 		break;
  345. 	case ID_GREENBRUSH:
  346. 		g_nBrushColor = RGB(0, 255, 0);
  347. 		InvalidateRect(hWnd, NULL, TRUE);
  348. 		break;
  350. 		//画刷样式
  351. 	case ID_SOLIDBRUSH:
  352. 		g_nBrushStyle = 0xFFFFFFFF;
  353. 		InvalidateRect(hWnd, NULL, TRUE);
  354. 		break;
  355. 	case ID_HSDIAGCROSS:
  356. 		g_nBrushStyle = HS_DIAGCROSS;
  357. 		InvalidateRect(hWnd, NULL, TRUE);
  358. 		break;
  360. 	case ID_EXIT:
  361. 		PostQuitMessage(0);
  362. 		break;
  363. 	}
  364. }
  367. LRESULT CALLBACK WndProc(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
  368. {
  369. 	switch (nMsg)
  370. 	{
  371. 	case WM_PAINT:
  372. 		OnPaint(hWnd, nMsg, wParam, lParam);
  373. 		break;
  374. 	case WM_COMMAND:
  375. 		OnCommand(hWnd, nMsg, wParam, lParam);
  376. 		break;
  377. 	case WM_DESTROY:
  378. 		PostQuitMessage(0);
  379. 		break;
  380. 	}
  381. 	return DefWindowProc(hWnd, nMsg, wParam, lParam);
  382. }
  384. BOOL RegisterWnd(LPSTR pszClassName)
  385. {
  386. 	WNDCLASSEX wce = { 0 };
  387. 	wce.cbClsExtra = 0;
  388. 	wce.cbSize = sizeof(wce);
  389. 	wce.cbWndExtra = 0;
  390. 	wce.hbrBackground = HBRUSH(COLOR_BTNFACE + 1);
  391. 	wce.hCursor = NULL;
  392. 	wce.hIcon = NULL;
  393. 	wce.hIconSm = NULL;
  394. 	wce.hInstance = g_hInst;
  395. 	wce.lpfnWndProc = WndProc;
  396. 	wce.lpszClassName = pszClassName;
  397. 	wce.lpszMenuName = NULL;
  398. 	wce.style = CS_VREDRAW | CS_HREDRAW;
  400. 	ATOM aTom = RegisterClassEx(&wce);
  401. 	if (aTom)
  402. 	{
  403. 		return TRUE;
  404. 	}
  405. 	else
  406. 	{
  407. 		return FALSE;
  408. 	}
  409. }
  411. HWND CreateWnd(LPSTR pszClassName)
  412. {
  413. 	CHAR szTextWindow[256] = { 0 };
  414. 	LoadString(g_hInst, IDS_WNDID, szTextWindow, 256);
  416. 	//添加菜单
  417. 	HMENU hMenu = LoadMenu(g_hInst, MAKEINTRESOURCE(IDR_MENU1));
  419. 	HWND hWnd = CreateWindowEx(0, pszClassName, szTextWindow, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
  420. 		NULL, hMenu, g_hInst, NULL);
  422. 	return hWnd;
  423. }
  425. void ShowWnd(HWND hWnd)
  426. {
  427. 	ShowWindow(hWnd, SW_SHOW);
  428. 	UpdateWindow(hWnd);
  429. }
  431. void Msg()
  432. {
  433. 	MSG msg = { 0 };
  434. 	while (GetMessage(&msg, NULL, 0, 0))
  435. 	{
  436. 		TranslateMessage(&msg);
  437. 		DispatchMessage(&msg);
  438. 	}
  439. }
  441. void ConsoleWnd()
  442. {
  443. 	AllocConsole();
  444. 	g_hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
  446. 	CHAR szText[] = "Debug start:\n";
  447. 	WriteConsole(g_hStdout, szText, strlen(szText), NULL, NULL);
  448. }
  449. int WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine, _In_ int nShowCmd)
  450. {
  451. 	g_hInst = hInstance;
  452. 	//AllocConsole();
  453. 	RegisterWnd("9999");
  454. 	HWND hWnd = CreateWnd("9999");
  455. 	ShowWnd(hWnd);
  456. 	Msg();
  458. 	return 0;
  459. }





7Windows_paint GDI绘图

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原文地址：http://www.cnblogs.com/nfking/p/5573164.html
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